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Finding the Fourth Proportional to 302,292, 453,438 and 80,676

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Solution

The fourth proportional to 302,292, 453,438 and 80,676 is: 121,014

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,292 : 453,438 = 80,676 : x
  2. Step 2: Convert to fraction form
    302,292/453,438 = 80,676/x
  3. Step 3: Cross multiply
    302,292x = 453,438 × 80,676
  4. Step 4: Simplify right side
    302,292x = 36,581,564,088
  5. Step 5: Solve for x
    x = 36,581,564,088/302,292
  6. Step 6: Final answer
    x = 121,014

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.